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SM 28
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SM 28

Altoparlanti a due vie da superficie con SpeedMount e woofer da 203 mm

Caratteristiche principali

Sistema di montaggio a scomparsa brevettato
Include staffa di montaggio da 0° e adattatore da 10°
Progettato per consentire installazioni in più fasi e costi ridotti
Woofer long-throw da 203 mm con due porte bass reflex accordate
Tweeter a cupola di seta da 28 mm
Disponibile in due versioni per sistemi a bassa impedenza o da 70/100 V:
- Solo funzionamento diretto a 8 Ω
- Funzionamento diretto a 8 Ω e 70/100 V
Tutte le caratteristiche

SM 28 Back, SM 28 Side and 0° Mounting Plate, and SM 28 Side with 0° Mounting plate and 10° Mounting Adapter

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L'altoparlante SpeedMount^® con montaggio su superficie SM 28 di Extron è un altoparlante a due vie con sistema di montaggio su parete a scomparsa brevettato. Presenta un woofer da 203 mm con due porte accordate e un tweeter da 28 mm. SM 28 offre una gamma di frequenze da 59 Hz a 22 kHz e una potenza nominale con capacità di 90 W di pink noise continuo e 180 W di program continuo. Il sistema di montaggio esclusivo di Extron è progettato per consentire installazioni in più fasi e costi ridotti. SM 28 è disponibile come modello a 8 Ω e in versione SM 28T con funzionamento diretto a 8 Ω oppure a 70 e 100 V. SM 28T presenta inoltre un selettore di potenza fino a 64 W a sei posizioni con comodo accesso attraverso la griglia dall'esterno dell'altoparlante.

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SM 28

Provide a two-way, 8 ohm surface mount speaker that shall accommodate division-of-labor installations.
1. Two-way surface mount speaker with a dual-ported enclosure, grille, crossover network, 8 ohm nominal impedance, and a concealed, lockable mounting system
  1. Driver Requirements
    1. Shall consist of a 8" (20.3 cm) polypropylene woofer
    2. Shall consist of a 1.1" (2.8 cm) silk dome tweeter
  2. Performance Requirements
    1. Shall provide a frequency range of 59 Hz to 22 kHz, -10 dB below average SPL, measured on-axis in full space per IEC 60268-5
    2. Shall provide a power capacity of 90 watts (rms) continuous pink noise per IEC 60268-5 and 180 watts (rms) continuous program
    3. Shall provide a nominal sensitivity of 87 dB SPL (1 W, 1 m) measured in full space
    4. Shall provide a nominal impedance of 8 ohms
    5. Shall provide a crossover frequency of 2.0 kHz
  3. Electrical Requirements
    1. Shall support 8 ohm direct connection from power amplifiers
    2. Shall provide an internal overload protection circuit
    3. Shall support one incoming and one outgoing speaker level signal on one 4-pole, 10 mm Euro-style captive screw terminal block built into 0° mounting plate
      1. Shall support direct wiring of speaker or support wiring of multiple speakers using loop-through wiring terminals
      2. Shall support a maximum wire gauge of 12 AWG per connection point for a single wire
      3. Shall support a maximum wire gauge of 16 AWG per connection point for two wires
  4. Enclosure Requirements
    1. Shall consist of a plastic, trapezoidal enclosure with molded grille and dual bass reflex ports
    2. Shall have a black or white finish
    3. Shall measure 16.5" (41.91 cm) in height when using 0° mounting plate
    4. Shall measure 11.5" (29.21 cm) in width when using 0° mounting plate
    5. Shall protrude 7.80" (19.81 cm) into environment from mounting surface when using 0° mounting plate
    6. Shall weigh 10.9 lbs (5.0 kg) per speaker when using 0° mounting plate
  5. Mounting Requirements
    1. Shall include a 0° mounting plate for vertical or horizontal flush-with-the-wall installation
      1. Shall support both enclosure mounting and electrical connection as speaker is placed on mount
      2. Shall support all incoming and pass-through wiring for speaker
      3. Shall have a black or white finish to match speaker
    2. Shall include a four position 10° mounting adapter for vertical or horizontal speaker installation with 10° of tilt downward, upward, left, or right
      1. Shall have a black or white finish to match speaker
    3. Shall provide cable raceway access on 0° mounting plate and 10° mounting adapter for surface-mounted wiring
    4. Shall support 180° of speaker pivot in 10° detented steps with the use of optional Extron Yoke Mount Kit that is available in black or white finish
    5. Shall provide a hidden locking speaker release mechanism
  6. General Requirements
    1. Shall be sold in pairs
    2. Shall meet regulatory compliances
      1. Shall comply with appropriate requirements of RoHS and WEEE
    3. Shall provide five years parts and labor warranty
2. Approved device shall be the Extron SM 28, part number 60-1309-02 or 60-1309-03; no alternates or equals.

SM 28

Provide a two-way, 8 ohm surface mount speaker that shall accommodate division-of-labor installations.
1. Two-way surface mount speaker with a dual-ported enclosure, grille, crossover network, 8 ohm nominal impedance, and a concealed, lockable mounting system
  1. Driver Requirements
    1. Shall consist of a 8" (20.3 cm) polypropylene woofer
    2. Shall consist of a 1.1" (2.8 cm) silk dome tweeter
  2. Performance Requirements
    1. Shall provide a frequency range of 59 Hz to 22 kHz, -10 dB below average SPL, measured on-axis in full space per IEC 60268-5
    2. Shall provide a power capacity of 90 watts (rms) continuous pink noise per IEC 60268-5 and 180 watts (rms) continuous program
    3. Shall provide a nominal sensitivity of 87 dB SPL (1 W, 1 m) measured in full space
    4. Shall provide a nominal impedance of 8 ohms
    5. Shall provide a crossover frequency of 2.0 kHz
  3. Electrical Requirements
    1. Shall support 8 ohm direct connection from power amplifiers
    2. Shall provide an internal overload protection circuit
    3. Shall support one incoming and one outgoing speaker level signal on one 4-pole, 10 mm Euro-style captive screw terminal block built into 0° mounting plate
      1. Shall support direct wiring of speaker or support wiring of multiple speakers using loop-through wiring terminals
      2. Shall support a maximum wire gauge of 12 AWG per connection point for a single wire
      3. Shall support a maximum wire gauge of 16 AWG per connection point for two wires
  4. Enclosure Requirements
    1. Shall consist of a plastic, trapezoidal enclosure with molded grille and dual bass reflex ports
    2. Shall have a black or white finish
    3. Shall measure 16.5" (41.91 cm) in height when using 0° mounting plate
    4. Shall measure 11.5" (29.21 cm) in width when using 0° mounting plate
    5. Shall protrude 7.80" (19.81 cm) into environment from mounting surface when using 0° mounting plate
    6. Shall weigh 10.9 lbs (5.0 kg) per speaker when using 0° mounting plate
  5. Mounting Requirements
    1. Shall include a 0° mounting plate for vertical or horizontal flush-with-the-wall installation
      1. Shall support both enclosure mounting and electrical connection as speaker is placed on mount
      2. Shall support all incoming and pass-through wiring for speaker
      3. Shall have a black or white finish to match speaker
    2. Shall include a four position 10° mounting adapter for vertical or horizontal speaker installation with 10° of tilt downward, upward, left, or right
      1. Shall have a black or white finish to match speaker
    3. Shall provide cable raceway access on 0° mounting plate and 10° mounting adapter for surface-mounted wiring
    4. Shall support 180° of speaker pivot in 10° detented steps with the use of optional Extron Yoke Mount Kit that is available in black or white finish
    5. Shall provide a hidden locking speaker release mechanism
  6. General Requirements
    1. Shall be sold in pairs
    2. Shall meet regulatory compliances
      1. Shall comply with appropriate requirements of RoHS and WEEE
    3. Shall provide five years parts and labor warranty
2. Approved device shall be the Extron SM 28, part number 60-1309-02 or 60-1309-03; no alternates or equals.

SM 28

Provide a two-way, 8 ohm surface mount speaker that shall accommodate division-of-labor installations.
1. Two-way surface mount speaker with a dual-ported enclosure, grille, crossover network, 8 ohm nominal impedance, and a concealed, lockable mounting system
  1. Driver Requirements
    1. Shall consist of a 8" (20.3 cm) polypropylene woofer
    2. Shall consist of a 1.1" (2.8 cm) silk dome tweeter
  2. Performance Requirements
    1. Shall provide a frequency range of 59 Hz to 22 kHz, -10 dB below average SPL, measured on-axis in full space per IEC 60268-5
    2. Shall provide a power capacity of 90 watts (rms) continuous pink noise per IEC 60268-5 and 180 watts (rms) continuous program
    3. Shall provide a nominal sensitivity of 87 dB SPL (1 W, 1 m) measured in full space
    4. Shall provide a nominal impedance of 8 ohms
    5. Shall provide a crossover frequency of 2.0 kHz
  3. Electrical Requirements
    1. Shall support 8 ohm direct connection from power amplifiers
    2. Shall provide an internal overload protection circuit
    3. Shall support one incoming and one outgoing speaker level signal on one 4-pole, 10 mm Euro-style captive screw terminal block built into 0° mounting plate
      1. Shall support direct wiring of speaker or support wiring of multiple speakers using loop-through wiring terminals
      2. Shall support a maximum wire gauge of 12 AWG per connection point for a single wire
      3. Shall support a maximum wire gauge of 16 AWG per connection point for two wires
  4. Enclosure Requirements
    1. Shall consist of a plastic, trapezoidal enclosure with molded grille and dual bass reflex ports
    2. Shall have a black or white finish
    3. Shall measure 16.5" (41.91 cm) in height when using 0° mounting plate
    4. Shall measure 11.5" (29.21 cm) in width when using 0° mounting plate
    5. Shall protrude 7.80" (19.81 cm) into environment from mounting surface when using 0° mounting plate
    6. Shall weigh 10.9 lbs (5.0 kg) per speaker when using 0° mounting plate
  5. Mounting Requirements
    1. Shall include a 0° mounting plate for vertical or horizontal flush-with-the-wall installation
      1. Shall support both enclosure mounting and electrical connection as speaker is placed on mount
      2. Shall support all incoming and pass-through wiring for speaker
      3. Shall have a black or white finish to match speaker
    2. Shall include a four position 10° mounting adapter for vertical or horizontal speaker installation with 10° of tilt downward, upward, left, or right
      1. Shall have a black or white finish to match speaker
    3. Shall provide cable raceway access on 0° mounting plate and 10° mounting adapter for surface-mounted wiring
    4. Shall support 180° of speaker pivot in 10° detented steps with the use of optional Extron Yoke Mount Kit that is available in black or white finish
    5. Shall provide a hidden locking speaker release mechanism
  6. General Requirements
    1. Shall be sold in pairs
    2. Shall meet regulatory compliances
      1. Shall comply with appropriate requirements of RoHS and WEEE
    3. Shall provide five years parts and labor warranty
2. Approved device shall be the Extron SM 28, part number 60-1309-02 or 60-1309-03; no alternates or equals.

SM 28

Provide a two-way, 8 ohm surface mount speaker that shall accommodate division-of-labor installations.
1. Two-way surface mount speaker with a dual-ported enclosure, grille, crossover network, 8 ohm nominal impedance, and a concealed, lockable mounting system
  1. Driver Requirements
    1. Shall consist of a 8" (20.3 cm) polypropylene woofer
    2. Shall consist of a 1.1" (2.8 cm) silk dome tweeter
  2. Performance Requirements
    1. Shall provide a frequency range of 59 Hz to 22 kHz, -10 dB below average SPL, measured on-axis in full space per IEC 60268-5
    2. Shall provide a power capacity of 90 watts (rms) continuous pink noise per IEC 60268-5 and 180 watts (rms) continuous program
    3. Shall provide a nominal sensitivity of 87 dB SPL (1 W, 1 m) measured in full space
    4. Shall provide a nominal impedance of 8 ohms
    5. Shall provide a crossover frequency of 2.0 kHz
  3. Electrical Requirements
    1. Shall support 8 ohm direct connection from power amplifiers
    2. Shall provide an internal overload protection circuit
    3. Shall support one incoming and one outgoing speaker level signal on one 4-pole, 10 mm Euro-style captive screw terminal block built into 0° mounting plate
      1. Shall support direct wiring of speaker or support wiring of multiple speakers using loop-through wiring terminals
      2. Shall support a maximum wire gauge of 12 AWG per connection point for a single wire
      3. Shall support a maximum wire gauge of 16 AWG per connection point for two wires
  4. Enclosure Requirements
    1. Shall consist of a plastic, trapezoidal enclosure with molded grille and dual bass reflex ports
    2. Shall have a black or white finish
    3. Shall measure 16.5" (41.91 cm) in height when using 0° mounting plate
    4. Shall measure 11.5" (29.21 cm) in width when using 0° mounting plate
    5. Shall protrude 7.80" (19.81 cm) into environment from mounting surface when using 0° mounting plate
    6. Shall weigh 10.9 lbs (5.0 kg) per speaker when using 0° mounting plate
  5. Mounting Requirements
    1. Shall include a 0° mounting plate for vertical or horizontal flush-with-the-wall installation
      1. Shall support both enclosure mounting and electrical connection as speaker is placed on mount
      2. Shall support all incoming and pass-through wiring for speaker
      3. Shall have a black or white finish to match speaker
    2. Shall include a four position 10° mounting adapter for vertical or horizontal speaker installation with 10° of tilt downward, upward, left, or right
      1. Shall have a black or white finish to match speaker
    3. Shall provide cable raceway access on 0° mounting plate and 10° mounting adapter for surface-mounted wiring
    4. Shall support 180° of speaker pivot in 10° detented steps with the use of optional Extron Yoke Mount Kit that is available in black or white finish
    5. Shall provide a hidden locking speaker release mechanism
  6. General Requirements
    1. Shall be sold in pairs
    2. Shall meet regulatory compliances
      1. Shall comply with appropriate requirements of RoHS and WEEE
    3. Shall provide five years parts and labor warranty
2. Approved device shall be the Extron SM 28, part number 60-1309-02 or 60-1309-03; no alternates or equals.

SM 28T

Provide a two-way surface mount speaker that shall provide an internal transformer and accommodate division-of-labor installations.
1. Two-way surface mount speaker with a dual-ported enclosure, grille, crossover network, internal transformer for 8 ohm direct and 70/100 volt operation, and a concealed, lockable mounting system
  1. Driver Requirements
    1. Shall consist of a 8" (20.3 cm) polypropylene woofer
    2. Shall consist of a 1.1" (2.8 cm) silk dome tweeter
  2. Performance Requirements
    1. Shall provide a frequency range of 59 Hz to 22 kHz, -10 dB below average SPL, measured on-axis in full space per IEC 60268-5
    2. Shall provide a power capacity of 90 watts (rms) continuous pink noise per IEC 60268-5 and 180 watts (rms) continuous program
    3. Shall provide a nominal sensitivity of 87 dB SPL (1 W, 1 m) measured in full space
    4. Shall provide a nominal impedance of 8 ohms
    5. Shall provide a crossover frequency of 2.0 kHz
  3. Electrical Requirements
    1. Shall support 8 ohm direct or 70/100 volt connection from power amplifiers
    2. Shall provide an internal overload protection circuit
    3. Shall provide a six-position, through-the-grille power tap selector
      1. Shall provide selectable rotary switch taps for 70 volt operation, including 64, 32, 16, and 8 watts, off, and 8 ohms direct
      2. Shall provide selectable rotary switch taps for 100 volt operation, including 64, 32, and 16 watts, off, and 8 ohms direct
      3. Shall provide speaker tap selector and selection guide on the front of the speaker
    4. Shall provide an internal overload protection circuit
    5. Shall support one incoming and one outgoing speaker level signal on one 4-pole, 10 mm Euro-style captive screw terminal block built into 0° mounting plate
      1. Shall support direct wiring of speaker or support wiring of multiple speakers using loop-through wiring terminals
      2. Shall support a maximum wire gauge of 12 AWG per connection point for a single wire
      3. Shall support a maximum wire gauge of 16 AWG per connection point for two wires
  4. Enclosure Requirements
    1. Shall consist of a plastic, trapezoidal enclosure with molded grille and dual bass reflex ports
    2. Shall have a black or white finish
    3. Shall measure 16.5" (41.91 cm) in height when using 0° mounting plate
    4. Shall measure 11.5" (29.21 cm) in width when using 0° mounting plate
    5. Shall protrude 7.80" (19.81 cm) into environment from mounting surface when using 0° mounting plate
    6. Shall weigh 12.8 lbs (5.8 kg) per speaker when using 0° mounting plate
  5. Mounting Requirements
    1. Shall include a 0° mounting plate for vertical or horizontal flush-with-the-wall installation
      1. Shall support both enclosure mounting and electrical connection as speaker is placed on mount
      2. Shall support all incoming and pass-through wiring for speaker
      3. Shall have a black or white finish to match speaker
    2. Shall include a four position 10° mounting adapter for vertical or horizontal speaker installation with 10° of tilt downward, upward, left, or right
      1. Shall have a black or white finish to match speaker
    3. Shall provide cable raceway access on 0° mounting plate and 10° mounting adapter for surface-mounted wiring
    4. Shall support 180° of speaker pivot in 10° detented steps with the use of optional Extron Yoke Mount Kit that is available in black or white finish
    5. Shall provide a hidden locking speaker release mechanism
  6. General Requirements
    1. Shall be sold in pairs
    2. Shall meet regulatory compliances
      1. Shall comply with appropriate requirements of RoHS and WEEE
    3. Shall provide five years parts and labor warranty
2. Approved device shall be the Extron SM 28T, part number 60-1309-12 or 60-1309-13; no alternates or equals.

SM 28T

Provide a two-way surface mount speaker that shall provide an internal transformer and accommodate division-of-labor installations.
1. Two-way surface mount speaker with a dual-ported enclosure, grille, crossover network, internal transformer for 8 ohm direct and 70/100 volt operation, and a concealed, lockable mounting system
  1. Driver Requirements
    1. Shall consist of a 8" (20.3 cm) polypropylene woofer
    2. Shall consist of a 1.1" (2.8 cm) silk dome tweeter
  2. Performance Requirements
    1. Shall provide a frequency range of 59 Hz to 22 kHz, -10 dB below average SPL, measured on-axis in full space per IEC 60268-5
    2. Shall provide a power capacity of 90 watts (rms) continuous pink noise per IEC 60268-5 and 180 watts (rms) continuous program
    3. Shall provide a nominal sensitivity of 87 dB SPL (1 W, 1 m) measured in full space
    4. Shall provide a nominal impedance of 8 ohms
    5. Shall provide a crossover frequency of 2.0 kHz
  3. Electrical Requirements
    1. Shall support 8 ohm direct or 70/100 volt connection from power amplifiers
    2. Shall provide an internal overload protection circuit
    3. Shall provide a six-position, through-the-grille power tap selector
      1. Shall provide selectable rotary switch taps for 70 volt operation, including 64, 32, 16, and 8 watts, off, and 8 ohms direct
      2. Shall provide selectable rotary switch taps for 100 volt operation, including 64, 32, and 16 watts, off, and 8 ohms direct
      3. Shall provide speaker tap selector and selection guide on the front of the speaker
    4. Shall provide an internal overload protection circuit
    5. Shall support one incoming and one outgoing speaker level signal on one 4-pole, 10 mm Euro-style captive screw terminal block built into 0° mounting plate
      1. Shall support direct wiring of speaker or support wiring of multiple speakers using loop-through wiring terminals
      2. Shall support a maximum wire gauge of 12 AWG per connection point for a single wire
      3. Shall support a maximum wire gauge of 16 AWG per connection point for two wires
  4. Enclosure Requirements
    1. Shall consist of a plastic, trapezoidal enclosure with molded grille and dual bass reflex ports
    2. Shall have a black or white finish
    3. Shall measure 16.5" (41.91 cm) in height when using 0° mounting plate
    4. Shall measure 11.5" (29.21 cm) in width when using 0° mounting plate
    5. Shall protrude 7.80" (19.81 cm) into environment from mounting surface when using 0° mounting plate
    6. Shall weigh 12.8 lbs (5.8 kg) per speaker when using 0° mounting plate
  5. Mounting Requirements
    1. Shall include a 0° mounting plate for vertical or horizontal flush-with-the-wall installation
      1. Shall support both enclosure mounting and electrical connection as speaker is placed on mount
      2. Shall support all incoming and pass-through wiring for speaker
      3. Shall have a black or white finish to match speaker
    2. Shall include a four position 10° mounting adapter for vertical or horizontal speaker installation with 10° of tilt downward, upward, left, or right
      1. Shall have a black or white finish to match speaker
    3. Shall provide cable raceway access on 0° mounting plate and 10° mounting adapter for surface-mounted wiring
    4. Shall support 180° of speaker pivot in 10° detented steps with the use of optional Extron Yoke Mount Kit that is available in black or white finish
    5. Shall provide a hidden locking speaker release mechanism
  6. General Requirements
    1. Shall be sold in pairs
    2. Shall meet regulatory compliances
      1. Shall comply with appropriate requirements of RoHS and WEEE
    3. Shall provide five years parts and labor warranty
2. Approved device shall be the Extron SM 28T, part number 60-1309-12 or 60-1309-13; no alternates or equals.

SM 28T

Provide a two-way surface mount speaker that shall provide an internal transformer and accommodate division-of-labor installations.
1. Two-way surface mount speaker with a dual-ported enclosure, grille, crossover network, internal transformer for 8 ohm direct and 70/100 volt operation, and a concealed, lockable mounting system
  1. Driver Requirements
    1. Shall consist of a 8" (20.3 cm) polypropylene woofer
    2. Shall consist of a 1.1" (2.8 cm) silk dome tweeter
  2. Performance Requirements
    1. Shall provide a frequency range of 59 Hz to 22 kHz, -10 dB below average SPL, measured on-axis in full space per IEC 60268-5
    2. Shall provide a power capacity of 90 watts (rms) continuous pink noise per IEC 60268-5 and 180 watts (rms) continuous program
    3. Shall provide a nominal sensitivity of 87 dB SPL (1 W, 1 m) measured in full space
    4. Shall provide a nominal impedance of 8 ohms
    5. Shall provide a crossover frequency of 2.0 kHz
  3. Electrical Requirements
    1. Shall support 8 ohm direct or 70/100 volt connection from power amplifiers
    2. Shall provide an internal overload protection circuit
    3. Shall provide a six-position, through-the-grille power tap selector
      1. Shall provide selectable rotary switch taps for 70 volt operation, including 64, 32, 16, and 8 watts, off, and 8 ohms direct
      2. Shall provide selectable rotary switch taps for 100 volt operation, including 64, 32, and 16 watts, off, and 8 ohms direct
      3. Shall provide speaker tap selector and selection guide on the front of the speaker
    4. Shall provide an internal overload protection circuit
    5. Shall support one incoming and one outgoing speaker level signal on one 4-pole, 10 mm Euro-style captive screw terminal block built into 0° mounting plate
      1. Shall support direct wiring of speaker or support wiring of multiple speakers using loop-through wiring terminals
      2. Shall support a maximum wire gauge of 12 AWG per connection point for a single wire
      3. Shall support a maximum wire gauge of 16 AWG per connection point for two wires
  4. Enclosure Requirements
    1. Shall consist of a plastic, trapezoidal enclosure with molded grille and dual bass reflex ports
    2. Shall have a black or white finish
    3. Shall measure 16.5" (41.91 cm) in height when using 0° mounting plate
    4. Shall measure 11.5" (29.21 cm) in width when using 0° mounting plate
    5. Shall protrude 7.80" (19.81 cm) into environment from mounting surface when using 0° mounting plate
    6. Shall weigh 12.8 lbs (5.8 kg) per speaker when using 0° mounting plate
  5. Mounting Requirements
    1. Shall include a 0° mounting plate for vertical or horizontal flush-with-the-wall installation
      1. Shall support both enclosure mounting and electrical connection as speaker is placed on mount
      2. Shall support all incoming and pass-through wiring for speaker
      3. Shall have a black or white finish to match speaker
    2. Shall include a four position 10° mounting adapter for vertical or horizontal speaker installation with 10° of tilt downward, upward, left, or right
      1. Shall have a black or white finish to match speaker
    3. Shall provide cable raceway access on 0° mounting plate and 10° mounting adapter for surface-mounted wiring
    4. Shall support 180° of speaker pivot in 10° detented steps with the use of optional Extron Yoke Mount Kit that is available in black or white finish
    5. Shall provide a hidden locking speaker release mechanism
  6. General Requirements
    1. Shall be sold in pairs
    2. Shall meet regulatory compliances
      1. Shall comply with appropriate requirements of RoHS and WEEE
    3. Shall provide five years parts and labor warranty
2. Approved device shall be the Extron SM 28T, part number 60-1309-12 or 60-1309-13; no alternates or equals.

SM 28T

Provide a two-way surface mount speaker that shall provide an internal transformer and accommodate division-of-labor installations.
1. Two-way surface mount speaker with a dual-ported enclosure, grille, crossover network, internal transformer for 8 ohm direct and 70/100 volt operation, and a concealed, lockable mounting system
  1. Driver Requirements
    1. Shall consist of a 8" (20.3 cm) polypropylene woofer
    2. Shall consist of a 1.1" (2.8 cm) silk dome tweeter
  2. Performance Requirements
    1. Shall provide a frequency range of 59 Hz to 22 kHz, -10 dB below average SPL, measured on-axis in full space per IEC 60268-5
    2. Shall provide a power capacity of 90 watts (rms) continuous pink noise per IEC 60268-5 and 180 watts (rms) continuous program
    3. Shall provide a nominal sensitivity of 87 dB SPL (1 W, 1 m) measured in full space
    4. Shall provide a nominal impedance of 8 ohms
    5. Shall provide a crossover frequency of 2.0 kHz
  3. Electrical Requirements
    1. Shall support 8 ohm direct or 70/100 volt connection from power amplifiers
    2. Shall provide an internal overload protection circuit
    3. Shall provide a six-position, through-the-grille power tap selector
      1. Shall provide selectable rotary switch taps for 70 volt operation, including 64, 32, 16, and 8 watts, off, and 8 ohms direct
      2. Shall provide selectable rotary switch taps for 100 volt operation, including 64, 32, and 16 watts, off, and 8 ohms direct
      3. Shall provide speaker tap selector and selection guide on the front of the speaker
    4. Shall provide an internal overload protection circuit
    5. Shall support one incoming and one outgoing speaker level signal on one 4-pole, 10 mm Euro-style captive screw terminal block built into 0° mounting plate
      1. Shall support direct wiring of speaker or support wiring of multiple speakers using loop-through wiring terminals
      2. Shall support a maximum wire gauge of 12 AWG per connection point for a single wire
      3. Shall support a maximum wire gauge of 16 AWG per connection point for two wires
  4. Enclosure Requirements
    1. Shall consist of a plastic, trapezoidal enclosure with molded grille and dual bass reflex ports
    2. Shall have a black or white finish
    3. Shall measure 16.5" (41.91 cm) in height when using 0° mounting plate
    4. Shall measure 11.5" (29.21 cm) in width when using 0° mounting plate
    5. Shall protrude 7.80" (19.81 cm) into environment from mounting surface when using 0° mounting plate
    6. Shall weigh 12.8 lbs (5.8 kg) per speaker when using 0° mounting plate
  5. Mounting Requirements
    1. Shall include a 0° mounting plate for vertical or horizontal flush-with-the-wall installation
      1. Shall support both enclosure mounting and electrical connection as speaker is placed on mount
      2. Shall support all incoming and pass-through wiring for speaker
      3. Shall have a black or white finish to match speaker
    2. Shall include a four position 10° mounting adapter for vertical or horizontal speaker installation with 10° of tilt downward, upward, left, or right
      1. Shall have a black or white finish to match speaker
    3. Shall provide cable raceway access on 0° mounting plate and 10° mounting adapter for surface-mounted wiring
    4. Shall support 180° of speaker pivot in 10° detented steps with the use of optional Extron Yoke Mount Kit that is available in black or white finish
    5. Shall provide a hidden locking speaker release mechanism
  6. General Requirements
    1. Shall be sold in pairs
    2. Shall meet regulatory compliances
      1. Shall comply with appropriate requirements of RoHS and WEEE
    3. Shall provide five years parts and labor warranty
2. Approved device shall be the Extron SM 28T, part number 60-1309-12 or 60-1309-13; no alternates or equals.

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Nota: I prodotti Extron che usano la presa AC universale accettano molti tipi di prese AC diversi. Prima dell’uso, si assicuri che il dispositivo soddisfi tutti i requisiti normativi per la sua regione e sia conforme con i codici e gli standard locali di sicurezza ed elettrici applicabili.

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SM 28

Altoparlanti a due vie da superficie con SpeedMount e woofer da 203 mm

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